50mm Ravatherm XPS 300 SB Extruded Polystyrene

50mm Ravatherm XPS 300 SB is a robust XPS thermal insulation board featuring a butt-edge profile, engineered for challenging construction environments. It provides outstanding thermal performance, with a declared thermal conductivity of 0.030 W/mK for thicknesses up to 120mm, and 0.031 W/mK for thicknesses exceeding this threshold, supporting compliance with UK Building Regulations and energy-efficiency standards.

Produced with environmental responsibility at its core, 50mm Ravatherm 300 SB carries a Global Warming Potential (GWP) of less than 5, positioning it as a conscientious insulation solution.

With minimal water absorption properties, verified to BS EN 12087:2013 standards, this extruded polystyrene insulation performs exceptionally well in below DPC cavity wall insulation applications and other moisture-critical scenarios.

50mm Ravatherm XPS 300 SB insulation boards come in an extensive thickness range, spanning 30mm through to 200mm, delivering adaptability across diverse UK residential and commercial building projects.

Key Benefits

• Thickness: 50mm
• Board Length: 2500mm
• Board Width: 600mm
• Pack Quantity: 8
• Board Coverage: 1.5m2
• Pack Coverage: 15m2
• Thermal Conductivity: 0.030W/mK
• R-Value: 1.65m2K/W
• Compressive strength@ 10% deformation: 300kPa
• Compressive Creep max after 50 years < 2% deformation under stress σC: 130kPa
• Fire Rating (Reaction to Fire): E
• Water vapour diffusion resistance factor μ (tabulated value): 100
• Temperature limits: -50/+75
• Edge Profile: Butt Edge
• Surface finish: Skin

Application

• Ground bearing floor below screed
• Ground bearing floor below concrete slab
• Basement floors and retaining walls
• Suspended floor
• Swimming pool

Features

1. Homogeneous, closed-cell material structure
2. Permanently high thermal insulation level
3. Negligible moisture uptake
4. High strength, rigidity and dimensional stability
5. Water and frost resistance
6. High compressive strength
7. High vapour diffusion resistance
8. Resistance to rot and deterioration
9. Simple and quick installation

Info

Browse our full range of Ravatherm Extruded Polystyrene Insulation products. We deliver across the UK Mainland. For project-specific product guidance, competitive volume quotations, or technical advice, contact us on 02038839057 / 02038839057, email sales@insulationbee.co.uk or use Live Chat.